JP2842987B2 - Molten metal transfer device - Google Patents
Molten metal transfer deviceInfo
- Publication number
- JP2842987B2 JP2842987B2 JP3869494A JP3869494A JP2842987B2 JP 2842987 B2 JP2842987 B2 JP 2842987B2 JP 3869494 A JP3869494 A JP 3869494A JP 3869494 A JP3869494 A JP 3869494A JP 2842987 B2 JP2842987 B2 JP 2842987B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- hot water
- molten metal
- pipe
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Furnace Charging Or Discharging (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は溶解炉内に貯留したアル
ミニウム、マグネシウム又はそれらの合金等からなる溶
湯をサイフォンの原理を利用して精錬用保持炉内へ移送
する場合又は精錬後の溶湯をサイフォンの原理を利用し
て鋳造機の保持炉に移送する場合等に使用される溶融金
属の移送装置に関する。BACKGROUND OF THE INVENTION The present invention relates to a method for transferring molten metal, such as aluminum, magnesium or an alloy thereof, stored in a melting furnace into a holding furnace for refining using the principle of siphon, or for refining molten metal. The present invention relates to a molten metal transfer device used for transferring to a holding furnace of a casting machine using the principle of siphon.
【０００２】[0002]
【従来の技術】従来、溶解炉の溶融金属を精錬用保持炉
へ移送する場合等にはサイフォンの原理を利用した溶融
金属の移送装置が使用されている（実開昭６２−１５９
９６３）。図２はこの従来の溶融金属の移送装置を示す
模式図である。この図２に示すように、高位側に移湯側
容器２１が、また低位側に受湯側容器２２が配設されて
いる。そして、極大点を有するように湾曲した移湯管２
４の一端の管口が移湯側容器２１内の溶融金属Ｌ内に浸
漬され、他端の管口が受湯容器２２内の溶融金属Ｌに浸
漬されている。この移湯管２４の最上部の湾曲部より若
干受湯側容器２２寄りの低い部分には減圧用管２６が上
方に分岐して配設されている。この減圧用管２６は真空
ポンプ（図示せず）に連結されており、この減圧用管２
６と真空ポンプとの間には真空ゲージ２７及びストップ
バルブ２８が配置されている。このストップバルブ２８
を開にすることにより、減圧用管２６を介して移湯管２
４が真空ポンプにより減圧されるようになっている。ま
た、移湯管２４の最上部には、大気開放用管２９が上方
に分岐して配設されており、その先端にはストップバル
ブ３０が設けられている。このストップバルブ３０を開
にすることにより、大気開放用管２９を介して移湯管２
４が大気に開放される。2. Description of the Related Art Conventionally, when transferring molten metal in a melting furnace to a holding furnace for refining, a molten metal transfer apparatus utilizing the principle of siphon has been used (see Japanese Utility Model Application Laid-Open No. 62-159).
963). FIG. 2 is a schematic diagram showing this conventional molten metal transfer device. As shown in FIG. 2, a hot water transfer side container 21 is disposed on the high side and a hot water receiving side container 22 is disposed on the low side. And a hot water pipe 2 curved to have a maximum point
4 is immersed in the molten metal L in the hot water transfer container 21, and the other end is immersed in the molten metal L in the hot water receiving container 22. A depressurizing pipe 26 is provided in a portion slightly lower than the uppermost curved portion of the hot water transfer pipe 24 near the hot water receiving side container 22 so as to branch upward. The depressurizing tube 26 is connected to a vacuum pump (not shown).
A vacuum gauge 27 and a stop valve 28 are arranged between 6 and the vacuum pump. This stop valve 28
Is opened, the hot water transfer pipe 2 is
4 is decompressed by a vacuum pump. At the top of the hot water transfer pipe 24, an atmosphere opening pipe 29 is provided branching upward, and a stop valve 30 is provided at the tip thereof. By opening the stop valve 30, the hot water supply pipe 2 can be
4 is open to the atmosphere.
【０００３】このように構成された移送装置により溶融
金属Ｌを移送する場合には、ストップバルブ３０を閉に
し、真空ポンプの運転を開始した後、ストップバルブ２
８を徐々に開け、真空ゲージ２７により圧力を測定しな
がら移湯管２４内を減圧する。移湯管２４内が減圧され
ると、移湯側容器２１及び受湯側容器２２内の溶融金属
Ｌが移湯管２４内を上昇し、その後、受湯側容器２２に
向けて流れ落ち、移湯側容器２１から受湯側容器２２へ
サイフォン作用による溶融金属Ｌの移送が開始される。
そして、移湯側容器２１内の湯面が低下して、移送開始
が確認された後、ストップバルブ２８を閉める。その
後、溶融金属Ｌを所定量移送するまでこの状態を継続す
ると、サイフォン作用により溶融金属Ｌの移送が継続さ
れる。そして、溶融金属Ｌの移送を停止する場合には、
ストップバルブ３０を開けて移湯管２４内の圧力を大気
圧に回復させる。これにより、サイフォン作用が終了し
て移送が停止される。When the molten metal L is transferred by the transfer device configured as described above, the stop valve 30 is closed, the operation of the vacuum pump is started, and then the stop valve 2 is stopped.
8 is gradually opened, and the pressure inside the hot water transfer pipe 24 is reduced while measuring the pressure with the vacuum gauge 27. When the pressure in the hot water supply pipe 24 is reduced, the molten metal L in the hot water supply side vessel 21 and the hot water supply side vessel 22 rises in the hot water supply pipe 24, and thereafter flows down toward the hot water supply side vessel 22, and is transferred. Transfer of the molten metal L from the hot water side container 21 to the hot water side container 22 by the siphon action is started.
Then, after the level of the molten metal in the hot water transfer side container 21 is lowered and the start of the transfer is confirmed, the stop valve 28 is closed. Thereafter, when this state is continued until the molten metal L is transferred by a predetermined amount, the transfer of the molten metal L is continued by the siphon action. And when stopping the transfer of the molten metal L,
The stop valve 30 is opened to restore the pressure in the water pipe 24 to atmospheric pressure. Thereby, the siphon action ends and the transfer is stopped.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、移湯管
２４と真空ポンプとの間は、減圧用管２６を介して配管
部材又はフレキシブルホース等により接続されており、
移湯管２４の内面には移送金属及びその酸化物が付着す
る。このため、移湯管２４はこの付着物の除去等のメン
テナンスのために、曲管と直管とを組み合わせ、これら
を脱着可能に連結して構成されている。このため、移湯
管２４には多数の接続部が存在し、この接続部からのエ
アのリークは避けることができない。従って、減圧用管
２６のストップバルブ２８が閉じられた後は、接続部か
らのエアのリークによって移湯管２４内の圧力は次第に
上昇してゆく。結局、移湯管２４内の圧力がサイフォン
作用を維持することができない圧力まで上昇してしまう
ので、溶融金属Ｌの移送を長時間継続できないという問
題点がある。However, the hot water supply pipe 24 and the vacuum pump are connected by a piping member or a flexible hose or the like via a pressure reducing pipe 26.
The transfer metal and its oxide adhere to the inner surface of the hot water transfer pipe 24. For this reason, the hot water transfer pipe 24 is configured by combining a curved pipe and a straight pipe and detachably connecting them together for maintenance such as removal of the attached matter. For this reason, the hot water transfer pipe 24 has a large number of connection parts, and it is inevitable that air leaks from these connection parts. Therefore, after the stop valve 28 of the pressure reducing pipe 26 is closed, the pressure inside the hot water transfer pipe 24 gradually increases due to air leak from the connection portion. Eventually, the pressure in the hot water supply pipe 24 rises to a pressure at which the siphon action cannot be maintained, so that there is a problem that the transfer of the molten metal L cannot be continued for a long time.
【０００５】本発明はかかる問題点に鑑みてなされたも
のであって、サイフォン作用が維持される圧力の範囲内
に移湯管内の圧力を維持することができ、溶融金属を安
定して移送できる溶融金属の移送装置を提供することを
目的とする。The present invention has been made in view of such a problem, and can maintain the pressure in a hot water pipe within a range of a pressure at which a siphon action is maintained, and can stably transfer a molten metal. An object of the present invention is to provide an apparatus for transferring molten metal.
【０００６】[0006]
【課題を解決するための手段】本発明に係る溶融金属の
移送装置は、高位の移湯側容器から低位の受湯側容器に
溶融金属を移送する溶融金属の移送装置において、一端
の管口が前記移湯側容器内に配置され他端の管口が前記
受湯側容器内に配置されると共に最上部となる湾曲部を
有する移湯管と、この移湯管内の圧力を計測する圧力セ
ンサと、前記移湯管に連結され前記圧力センサの計測値
に基いて前記移湯管内を減圧制御する減圧制御部とを有
し、前記減圧制御部は前記圧力センサの検出圧力が溶融
金属の移送が不可能な圧力により決まる上限値に達した
場合に前記移湯管内を減圧し前記検出圧力が溶融金属の
移送を継続できる圧力に達した場合に減圧を停止するよ
うに前記移湯管内を減圧制御することを特徴とする。SUMMARY OF THE INVENTION A molten metal transfer device according to the present invention is a molten metal transfer device for transferring molten metal from a high-order hot-side container to a low-order hot-side container, and is provided with a port at one end. A hot water supply pipe having a curved portion which is disposed in the hot water supply side container and the other end of which is disposed in the hot water supply side container and which is the uppermost part, and a pressure for measuring the pressure in the hot water transfer pipe A sensor, and a decompression controller connected to the hot water pipe and configured to control the pressure inside the hot water pipe based on a measurement value of the pressure sensor.
And the pressure reduction control unit detects that the pressure detected by the pressure sensor is molten.
Reached the upper limit determined by the pressure at which metal transfer is not possible
In this case, the pressure in the hot water pipe is reduced and the detected pressure is
Stop the decompression when the pressure reaches the point where the transfer can be continued.
Thus, the pressure inside the hot water supply pipe is controlled .
【０００７】また、前記減圧制御部は、排気ポンプと、
この排気ポンプと前記移湯管とを連結する減圧管と、こ
の減圧管に設けられ前記圧力センサの計測値に基いて前
記移湯管と前記排気ポンプとの間を開閉する弁とを有す
るものにすることができる。更に、前記減圧制御部は前
記移湯管から排出されるガスの流量を制御する流量制御
器を設けてもよい。[0007] The pressure reduction control section includes an exhaust pump,
A pressure reducing pipe connecting the exhaust pump and the hot water pipe, and a valve provided on the pressure reducing pipe for opening and closing the hot water pipe and the exhaust pump based on a value measured by the pressure sensor. Can be Further, the pressure reduction control unit may include a flow rate controller for controlling a flow rate of gas discharged from the hot water pipe.
【０００８】[0008]
【作用】本発明においては、先ず、従来と同様の工程に
より、移湯管内の減圧が開始され、移湯側容器内及び受
湯側容器内の溶融金属が移湯管の管口から管内を上昇す
る。そして、移湯管内の圧力がサイフォン作用が生じる
圧力に達したことを圧力センサが検知すると、減圧を終
了し、最上部まで溶融金属で満たされた移湯管を介し
て、湯面が高位の移湯側容器から湯面が低位の受湯側容
器へ溶融金属の移送が始まる。その後、前記圧力センサ
が移湯管内の圧力を監視して、これが溶融金属を移送す
るために必要な圧力の範囲内に入っている間は、そのま
ま、溶融金属の移送を継続する。しかし、移湯管の接続
部等からのエアのリーク等によって移湯管内の圧力が徐
々に上昇した場合、移湯管内の圧力が移送が不可能な圧
力よりも若干低い所定圧力に達したことを圧力センサが
検知すると、前記減圧制御部は再び移湯管内を減圧す
る。そして、移湯管内の圧力が溶融金属の移送を継続で
きる圧力に達したことを圧力センサが検知すると、再度
減圧を停止する。In the present invention, first, pressure reduction in the hot water transfer pipe is started by the same process as in the prior art, and the molten metal in the hot water transfer vessel and the hot water receiving vessel flows from the mouth of the hot water transfer pipe to the inside of the pipe. Rise. When the pressure sensor detects that the pressure in the hot water pipe has reached the pressure at which the siphon action occurs, the pressure sensor terminates the decompression, and through the hot water pipe filled with molten metal up to the top, the level of the molten metal is higher. The transfer of the molten metal from the hot-water transfer container to the hot-water-receiver container having a lower level is started. Thereafter, the pressure sensor monitors the pressure in the hot water pipe, and while the pressure is within the range of pressure required for transferring the molten metal, the transfer of the molten metal is continued as it is. However, when the pressure in the hot water pipe gradually rises due to air leakage from the connection part of the hot water pipe, etc., the pressure in the hot water pipe has reached a predetermined pressure slightly lower than the pressure at which transfer is impossible. Is detected by the pressure sensor, the pressure reduction control section again reduces the pressure inside the hot water supply pipe. Then, when the pressure sensor detects that the pressure in the hot water pipe has reached a pressure at which the transfer of the molten metal can be continued, the pressure reduction is stopped again.
【０００９】このようにして、本発明に係る溶融金属の
移送装置は移湯管内の減圧を繰り返すことにより、移湯
管内の圧力を一定範囲内に維持しながら溶融金属の移送
を継続する。As described above, the molten metal transfer device according to the present invention continuously transfers the molten metal while maintaining the pressure in the hot water pipe within a certain range by repeatedly reducing the pressure in the hot water pipe.
【００１０】この場合に、移湯管から分岐した減圧管を
設け、この減圧管を介して減圧ポンプによって移湯管内
を減圧し、移湯管と減圧部との間を開閉する弁を設け、
圧力センサの測定値に基いて前記弁を開閉させ、又はそ
の開度を調節することにより、移湯管内を容易に所定の
減圧状態に維持することができる。更に、移送を開始さ
せる場合に、移湯管内を減圧する速度を流量制御器で調
整することにより、溶融金属が移湯管内を上昇する速度
を調整することができ、これにより迅速且つ円滑に移送
を開始することができる。In this case, a pressure reducing pipe branched from the hot water supply pipe is provided, and a pressure reducing pump is used to reduce the pressure inside the hot water supply pipe through the pressure reducing pipe, and a valve is provided for opening and closing between the hot water supply pipe and the pressure reducing section.
By opening and closing the valve or adjusting the opening thereof based on the measurement value of the pressure sensor, the inside of the hot water pipe can be easily maintained at a predetermined reduced pressure state. Further, when the transfer is started, the speed at which the molten metal rises in the hot water transfer pipe can be adjusted by adjusting the speed of depressurizing the inside of the hot water transfer pipe by a flow rate controller, thereby quickly and smoothly transferring the molten metal. Can be started.
【００１１】[0011]
【実施例】次に、本発明の実施例について添付の図面を
参照して具体的に説明する。図１は本発明の実施例に係
る溶融金属の移送装置を示す模式図である。移送すべき
溶融金属Ｌを貯留した移湯側容器１は高位置に配置さ
れ、受湯側容器２は移湯側容器１よりも低位置に配置さ
れている。受湯側容器２の内部には検知棒３が配置され
ており、この検知棒３により受湯側容器２内の溶融金属
Ｌの量が満量になったことを検知することができ、この
検知信号が操作盤１５に入力されたときに、移送を停止
するようになっている。なお、この検知棒３は、検知棒
３と溶融金属Ｌとの接触を電気的導通により測定するも
のとすることができるが、これに限らず、湯面を非接触
で測定できるセンサを使用してもよい。移湯管４はその
両端部が下方を向き、上端部が湾曲しており、一端の管
口が移湯側容器１の内側の底面近くに配置され、他端の
管口が受湯側容器２の内側の底面近くに配置されてい
る。Next, embodiments of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing a molten metal transfer device according to an embodiment of the present invention. The hot water transfer container 1 storing the molten metal L to be transferred is arranged at a high position, and the hot water receiving container 2 is arranged at a lower position than the hot water transfer container 1. A detection rod 3 is disposed inside the hot-water receiving container 2, and the detection rod 3 can detect that the amount of the molten metal L in the hot-water receiving container 2 is full. When the detection signal is input to the operation panel 15, the transfer is stopped. The detection rod 3 may be configured to measure the contact between the detection rod 3 and the molten metal L by electrical conduction, but is not limited thereto, and may use a sensor capable of measuring the molten metal surface in a non-contact manner. You may. Both ends of the hot water transfer pipe 4 face downward and the upper end is curved, one end of the hot water supply pipe is disposed near the inner bottom surface of the hot water transfer side container 1, and the other end of the hot water supply pipe is connected to the hot water supply side container. It is located near the bottom inside 2.
【００１２】この移湯管４の最上部の湾曲部には大気に
連通する配管が連結されており、この配管には第１大気
開放用電磁弁５及び流量制御器１０ｂが設けられてい
る。これにより、この第１大気開放用電磁弁５を開にす
ることにより、移湯管４内を大気に開放することができ
る。A pipe communicating with the atmosphere is connected to the uppermost curved portion of the hot water supply pipe 4, and the pipe is provided with a first air release solenoid valve 5 and a flow controller 10b. Thus, by opening the first atmosphere opening electromagnetic valve 5, the inside of the hot water transfer pipe 4 can be opened to the atmosphere.
【００１３】この移湯管４の最上部の湾曲部より若干受
湯側容器２寄りの低い部分には、減圧管６が移湯管４か
ら上方に分岐して配設されている。減圧管６はその途中
で２方向に分岐しており、その一方の配管に圧力センサ
７が配設されていて、この圧力センサ７により、移湯管
４内の圧力が計測される。また、他方の配管にはストッ
プバルブ８と、フィルター９と、流量制御器１０ａと、
減圧用電磁弁１１と、真空ポンプ１２とが移湯管４に近
い方からこの順に配管６，６ａ，６ｂを介して設けられ
ている。フィルター９は溶融金属Ｌが配管６，６ａから
流量制御器１０ａ、減圧用電磁弁１１及び真空ポンプ１
２に流入することを防止すると共に、真空ポンプ１２か
ら油等が移湯管４に逆流することを防止する。流量制御
器１０ａは減圧処理時に移湯管４内から排気されてきた
ガスの流量を調整し、これにより溶融金属Ｌが減圧当初
に移湯管４内を上昇する速度を調整するようになってい
る。また、減圧用電磁弁１１は開動作したときに、真空
ポンプ１２とが移湯管４内とが連通し、移湯管４内が減
圧される。また、減圧用電磁弁１１が閉動作すると、移
湯管４内の減圧が停止される。このように、減圧用電磁
弁１１が開閉し、移湯管４内の減圧処理がオンオフ制御
され、移湯管４内の圧力が一定範囲内に維持される。A depressurizing pipe 6 is provided at a portion slightly lower than the uppermost curved portion of the hot water supply pipe 4 toward the hot water receiving side container 2 so as to branch upward from the hot water supply pipe 4. The pressure reducing pipe 6 is branched in two directions in the middle thereof, and a pressure sensor 7 is provided on one of the pipes, and the pressure sensor 7 measures the pressure in the hot water transfer pipe 4. The other pipe has a stop valve 8, a filter 9, a flow controller 10a,
A pressure reducing solenoid valve 11 and a vacuum pump 12 are provided in this order via pipes 6, 6a, 6b from the side closer to the hot water supply pipe 4. The filter 9 is configured such that the molten metal L is supplied from the pipes 6 and 6a to the flow controller 10a, the pressure reducing solenoid valve 11 and the vacuum pump 1.
2 and the oil and the like from the vacuum pump 12 are prevented from flowing back into the hot water transfer pipe 4. The flow controller 10a adjusts the flow rate of the gas exhausted from the inside of the hot water pipe 4 at the time of the decompression process, thereby adjusting the speed at which the molten metal L rises inside the hot water pipe 4 at the beginning of the depressurization. I have. When the pressure reducing electromagnetic valve 11 is opened, the vacuum pump 12 communicates with the inside of the hot water transfer pipe 4, and the pressure inside the hot water transfer pipe 4 is reduced. When the pressure reducing solenoid valve 11 is closed, the pressure reduction in the hot water supply pipe 4 is stopped. In this way, the pressure reducing solenoid valve 11 is opened and closed, the pressure reduction process in the hot water pipe 4 is controlled to be on / off, and the pressure in the hot water pipe 4 is maintained within a certain range.
【００１４】一方、配管６ｃがストップバルブ８とフィ
ルター９との間の配管６ａから分岐して接続されてお
り、この配管６ｃには第２大気開放用電磁弁１３及び流
量制御器１０ｃが設けられている。また、減圧用電磁弁
１１と真空ポンプ１２との間の配管６ｂから配管６ｄが
分岐して接続されており、この配管６ｄには、第３大気
開放用電磁弁１４及び流量制御器１０ｄが設けられてい
る。これにより、配管６ａ，６ｂ内は大気開放用電磁弁
１３，１４を開にすることにより、各流量制御器１０
ｃ，１０ｄを介して大気が導入され、大気圧に回復す
る。On the other hand, a pipe 6c is branched from and connected to a pipe 6a between the stop valve 8 and the filter 9. The pipe 6c is provided with a second atmosphere opening solenoid valve 13 and a flow controller 10c. ing. Further, a pipe 6d is branched and connected from a pipe 6b between the pressure reducing solenoid valve 11 and the vacuum pump 12, and a third atmosphere opening solenoid valve 14 and a flow controller 10d are provided in the pipe 6d. Have been. By opening the air release solenoid valves 13 and 14 in the pipes 6a and 6b, each flow controller 10
Atmosphere is introduced through c and 10d, and is restored to the atmospheric pressure.
【００１５】また、圧力センサ７及び検知棒３の検知信
号は操作盤１５に入力され、操作盤１５はこれらの検知
信号に基いて所定の制御態様により電磁弁５，１１，１
３，１４にその開閉信号を出力する。The detection signals from the pressure sensor 7 and the detection rod 3 are input to an operation panel 15, and the operation panel 15 controls the solenoid valves 5, 11, 1 and 2 in a predetermined control manner based on the detection signals.
The opening / closing signal is output to 3,14.
【００１６】次に、操作盤１５の制御態様と共に、本実
施例の溶融金属の移送装置の動作について説明する。移
湯側容器１内の溶融金属Ｌを受湯側容器２に移送する場
合は、ストップバルブ８を開にし、操作盤１５が大気開
放用電磁弁５，１３，１４に閉信号を出力して、大気開
放用電磁弁５，１３，１４を閉にすると共に、真空ポン
プ１２を動作させる。次いで、操作盤１５は減圧用電磁
弁１１に開信号を出力して、減圧用電磁弁１１を開にす
る。そうすると、真空ポンプ１２と移湯管４内とが連通
し、移湯管４内が減圧される。移湯管４内が減圧される
と、移湯側容器１内及び受湯側容器２内の溶融金属Ｌが
移湯管４内を上昇する。Next, the operation of the apparatus for transferring molten metal of this embodiment will be described together with the control mode of the operation panel 15. When transferring the molten metal L in the hot water transfer side container 1 to the hot water supply side container 2, the stop valve 8 is opened, and the operation panel 15 outputs a close signal to the atmosphere opening electromagnetic valves 5, 13, and 14 to output the close signal. Then, the air release solenoid valves 5, 13, and 14 are closed, and the vacuum pump 12 is operated. Next, the operation panel 15 outputs an open signal to the pressure reducing solenoid valve 11 to open the pressure reducing solenoid valve 11. Then, the vacuum pump 12 and the inside of the hot water transfer pipe 4 communicate with each other, and the pressure inside the hot water transfer pipe 4 is reduced. When the pressure in the hot water supply pipe 4 is reduced, the molten metal L in the hot water supply side vessel 1 and the hot water receiving side vessel 2 rises in the hot water supply pipe 4.
【００１７】その後、サイフォン作用により溶融金属Ｌ
の移送が開始する圧力まで移湯管４内が減圧されたこと
を圧力センサ７が検知すると、この検知信号が操作盤１
５に入力される。そうすると、操作盤１５が減圧用電磁
弁１１に閉信号を出力することにより減圧用電磁弁１１
が閉動作し、減圧処理が停止する。その間に、移湯管４
内が所定の減圧下にあるので、溶融金属Ｌが移湯管４内
を徐々に上昇し、移湯管４内は溶融金属Ｌで満たされ
る。そうすると、高位側の移湯側容器１から低位側の受
湯側容器２までサイフォン作用により溶融金属Ｌの移送
が開始される。After that, the molten metal L
When the pressure sensor 7 detects that the inside of the hot water pipe 4 has been depressurized to the pressure at which the transfer of the water starts, this detection signal is sent to the operation panel 1.
5 is input. Then, the operation panel 15 outputs a close signal to the pressure-reducing electromagnetic valve 11 so that the pressure-reducing electromagnetic valve 11
Is closed, and the decompression process stops. Meanwhile, hot water pipe 4
Since the inside is under a predetermined reduced pressure, the molten metal L gradually rises in the hot water pipe 4, and the inside of the hot water pipe 4 is filled with the molten metal L. Then, the transfer of the molten metal L is started by the siphon action from the hot water transfer side container 1 on the higher side to the hot water receiver side container 2 on the lower side.
【００１８】溶融金属Ｌが移湯管４の最上部まで上昇す
るのに必要な圧力差が移湯管４内の圧力と大気圧との間
に維持されている間は、溶融金属Ｌの移送が継続され
る。しかし、この移送の間に、移湯管４の接続部等から
のエアのリークにより、移湯管４内の圧力が上昇し、移
湯管４内の圧力は溶融金属Ｌの移送が継続できない圧力
に近づいていく。そうすると、圧力センサ７は移湯管４
内の圧力が移送継続を不能とする圧力よりも若干低い所
定の圧力に達したときにこれを検知し、この検知信号が
操作盤１５に入力される。操作盤１５は圧力センサ７の
検知信号に基いて減圧用電磁弁１１に開信号を出力し
て、減圧用電磁弁１１を開動作させる。そうすると、再
び移湯管４内と真空ポンプ１２とが連通し、移湯管４内
の減圧が開始される。その後、移湯管４内の圧力がサイ
フォン作用による安定な移送が可能な圧力に戻ると、操
作盤１５が減圧用電磁弁１１に閉信号を出力して、減圧
用電磁弁１１が閉動作することにより、移湯管４内の減
圧が停止される。While the pressure difference required for the molten metal L to rise to the top of the hot water pipe 4 is maintained between the pressure inside the hot water pipe 4 and the atmospheric pressure, the transfer of the molten metal L Is continued. However, during this transfer, the pressure in the hot water pipe 4 increases due to the air leak from the connection portion of the hot water pipe 4 or the like, and the pressure in the hot water pipe 4 cannot continue the transfer of the molten metal L. Approaching pressure. Then, the pressure sensor 7 becomes the hot water pipe 4
When the internal pressure reaches a predetermined pressure slightly lower than the pressure at which the transfer cannot be continued, this is detected, and this detection signal is input to the operation panel 15. The operation panel 15 outputs an opening signal to the pressure reducing electromagnetic valve 11 based on the detection signal of the pressure sensor 7 to open the pressure reducing electromagnetic valve 11. Then, the inside of the hot water pipe 4 and the vacuum pump 12 communicate again, and the pressure inside the hot water pipe 4 is reduced. Thereafter, when the pressure in the hot water supply pipe 4 returns to a pressure at which stable transfer by the siphon action is possible, the operation panel 15 outputs a close signal to the pressure reducing solenoid valve 11, and the pressure reducing solenoid valve 11 is closed. As a result, the pressure reduction in the hot water transfer pipe 4 is stopped.
【００１９】次いで、所定量の溶融金属Ｌの移送が終了
すると、受湯側容器２内に配置された検知棒３が溶融金
属Ｌの湯面が検知棒３の位置まで上昇したことを検知
し、その検知信号が操作盤１５に出力される。この検知
信号が入力されると、操作盤１５が減圧用電磁弁１１に
閉信号を出力して、減圧用電磁弁１１を閉にする。そし
て、操作盤１５は大気開放用電磁弁５，１３，１４に開
信号を出力して、大気開放用電磁弁５，１３，１４を開
にする。そうすると、移湯管４内及び減圧管６，６ａ，
６ｂ内に大気が導入され、これらの管の内部が大気圧に
回復する。その結果、サイフォン作用が終了し、溶融金
属Ｌの移送が停止される。Next, when the transfer of the predetermined amount of the molten metal L is completed, the detection rod 3 disposed in the hot water receiving side container 2 detects that the molten metal L surface has risen to the position of the detection rod 3. , And the detection signal is output to the operation panel 15. When the detection signal is input, the operation panel 15 outputs a close signal to the pressure reducing electromagnetic valve 11 to close the pressure reducing electromagnetic valve 11. Then, the operation panel 15 outputs an open signal to the atmosphere opening solenoid valves 5, 13, and 14, and opens the atmosphere opening solenoid valves 5, 13, and 14. Then, the inside of the hot water pipe 4 and the decompression pipes 6, 6a,
Atmosphere is introduced into 6b and the interior of these tubes is restored to atmospheric pressure. As a result, the siphon action ends, and the transfer of the molten metal L is stopped.
【００２０】本発明の実施例においては、圧力センサ７
及び検知棒３の信号を操作盤１５に入力させると共に、
操作盤１５が各電磁弁５，１１，１３，１４にその開閉
信号を出力して、各電磁弁５，１１，１３，１４を開閉
させるように構成したので、溶融金属Ｌの移送の開始か
ら終了までの自動化を図ることができる。そして、エア
のリーク等により移湯管４内の圧力が上昇したことを圧
力センサ７が検知する度に、移湯管４内が減圧され、移
湯管４内の圧力が溶融金属を移送するために必要な圧力
の範囲内に維持される。これにより、サイフォン作用が
維持され、溶融金属Ｌが安定に移送される。この場合
に、移送が継続されるために必要な圧力の範囲は溶融金
属Ｌの種類及び受湯容器２の湯面と移湯管４の最上部と
の間の距離から決定される。In the embodiment of the present invention, the pressure sensor 7
And the signal of the detection rod 3 is input to the operation panel 15,
Since the operation panel 15 outputs the opening / closing signal to each of the solenoid valves 5, 11, 13, and 14 to open and close each of the solenoid valves 5, 11, 13, and 14, the operation panel 15 starts from the start of the transfer of the molten metal L. Automation until the end can be achieved. Each time the pressure sensor 7 detects that the pressure inside the hot water pipe 4 has increased due to air leak or the like, the pressure inside the hot water pipe 4 is reduced, and the pressure inside the hot water pipe 4 transfers the molten metal. Is maintained within the required pressure range. Thereby, the siphon action is maintained, and the molten metal L is stably transferred. In this case, the range of the pressure required for continuing the transfer is determined by the type of the molten metal L and the distance between the surface of the hot water container 2 and the top of the hot water pipe 4.
【００２１】一方、前記実施例では、圧力センサ７の信
号は操作盤１５に入力され、その信号に基いて操作盤１
５が減圧用電磁弁１１にその開閉信号を出力して、減圧
用電磁弁１１を開閉させる。しかし、減圧用電磁弁１１
の開閉方法はこれに限らない。例えば、圧力センサ７に
上限値及び下限値を設定し、この上限値及び下限値を検
知してオンオフ動作する圧力スイッチを設け、この圧力
スイッチに減圧用電磁弁１１の開閉を連動させてもよ
い。この場合も、前記実施例と同様の効果を奏する。On the other hand, in the above-described embodiment, the signal of the pressure sensor 7 is input to the operation panel 15 and the operation panel 1 is operated based on the signal.
5 outputs the opening / closing signal to the pressure reducing solenoid valve 11 to open and close the pressure reducing solenoid valve 11. However, the pressure reducing solenoid valve 11
The opening and closing method is not limited to this. For example, an upper limit value and a lower limit value may be set in the pressure sensor 7, a pressure switch that detects the upper limit value and the lower limit value and performs an on / off operation may be provided, and the opening and closing of the pressure reducing solenoid valve 11 may be linked to this pressure switch. . In this case, the same effect as in the above embodiment can be obtained.
【００２２】[0022]
【発明の効果】本発明に係る溶融金属の移送装置によれ
ば、移湯管内の圧力を圧力センサにより監視し、移湯管
内の圧力を所定の減圧圧力の範囲内に維持するので、サ
イフォン作用による溶融金属の移送が安定して長時間継
続される。また、本発明によれば、移送の開始から終了
までを自動化することも容易にできる。According to the apparatus for transferring molten metal according to the present invention, the pressure in the hot water pipe is monitored by the pressure sensor, and the pressure in the hot water pipe is maintained within a predetermined range of reduced pressure. The transfer of the molten metal is stable and continued for a long time. Further, according to the present invention, it is possible to easily automate the transfer from the start to the end.
【図１】本発明の実施例に係る溶融金属の移送装置を示
す模式図である。FIG. 1 is a schematic diagram showing a molten metal transfer device according to an embodiment of the present invention.
【図２】従来の溶融金属の移送装置を示す模式図であ
る。FIG. 2 is a schematic view showing a conventional molten metal transfer device.
１，２１；移湯側容器 ２，２２；受湯側容器 ３；検知棒 ４，２４；移湯管 ５；第１大気開放用電磁弁 ６，６ａ，６ｂ，６ｃ，６ｄ，２６；減圧管 ７；圧力センサ ８，２８，３０；ストップバルブ ９；フィルター １０ａ，１０ｂ，１０ｃ，１０ｄ；流量制御器 １１；減圧用電磁弁 １２；真空ポンプ １３；第２大気開放用電磁弁 １４；第３大気開放用電磁弁 １５；操作盤 ２７；真空ゲージ ２９；大気開放用管 Ｌ；溶融金属 1, 21; hot-water-side container 2, 22; hot-water-side container 3, detection rod 4, 24; hot-water pipe 5, solenoid valve for opening to the first atmosphere 6, 6a, 6b, 6c, 6d, 26; 7; pressure sensor 8, 28, 30; stop valve 9; filter 10a, 10b, 10c, 10d; flow controller 11; pressure reducing solenoid valve 12; vacuum pump 13; second atmosphere opening solenoid valve 14; Opening solenoid valve 15; Operation panel 27; Vacuum gauge 29; Atmospheric release tube L; Molten metal
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−118356（ＪＰ，Ａ) 特開 昭49−91904（ＪＰ，Ａ) 実開 昭62−159963（ＪＰ，Ｕ) 実開 平１−151200（ＪＰ，Ｕ) 実公 昭59−25586（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) F27D 3/14 B22D 35/00──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-118356 (JP, A) JP-A-49-91904 (JP, A) JP-A-62-159963 (JP, U) JP-A-1 151200 (JP, U) Jiko 59-25586 (JP, Y2) (58) Field surveyed (Int. Cl. 6 , DB name) F27D 3/14 B22D 35/00
Claims (3)
に溶融金属を移送する溶融金属の移送装置において、一
端の管口が前記移湯側容器内に配置され他端の管口が前
記受湯側容器内に配置されると共に最上部となる湾曲部
を有する移湯管と、この移湯管内の圧力を計測する圧力
センサと、前記移湯管に連結され前記圧力センサの計測
値に基いて前記移湯管内を減圧制御する減圧制御部とを
有し、前記減圧制御部は前記圧力センサの検出圧力が溶
融金属の移送が不可能な圧力により決まる上限値に達し
た場合に前記移湯管内を減圧し前記検出圧力が溶融金属
の移送を継続できる圧力に達した場合に減圧を停止する
ように前記移湯管内を減圧制御することを特徴とする溶
融金属の移送装置。1. A molten metal transfer device for transferring molten metal from a higher-level hot-water-side container to a lower-level hot-water-side container, wherein one end of the port is disposed in the hot-side container and the other end is positioned. Is located in the hot-water-receiving side container and has a curved portion that is the uppermost portion, a pressure sensor that measures the pressure in the hot-water tube, and measurement of the pressure sensor that is connected to the hot-water tube. the Utsuriyu tube possess a pressure reduction control unit for reducing the pressure control based on the value, the pressure reduction control unit has detected pressure of the pressure sensor soluble
The upper limit determined by the pressure at which molten metal transfer is impossible is reached.
If the pressure in the hot water pipe is reduced and the detected pressure is
Stops decompression when the pressure reaches a level at which the transfer of water can be continued
The apparatus for transferring molten metal , wherein the pressure in the hot water pipe is controlled as described above .
排気ポンプと前記移湯管とを連結する減圧管と、この減
圧管に設けられ前記圧力センサの計測値に基いて前記移
湯管と前記排気ポンプとの間を開閉する弁とを有するこ
とを特徴とする請求項１に記載の溶融金属の移送装置。2. The depressurization control unit includes an exhaust pump, a decompression pipe connecting the exhaust pump to the hot water pipe, and the hot water pipe provided on the decompression pipe based on a measurement value of the pressure sensor. The apparatus for transferring molten metal according to claim 1, further comprising a valve that opens and closes between the pump and the exhaust pump.
れるガスの流量を制御する流量制御器を有することを特
徴とする請求項１又は２に記載の溶融金属の移送装置。3. The molten metal transfer device according to claim 1, wherein the pressure reduction control unit has a flow rate controller that controls a flow rate of gas discharged from the hot water supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3869494A JP2842987B2 (en) | 1994-03-09 | 1994-03-09 | Molten metal transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3869494A JP2842987B2 (en) | 1994-03-09 | 1994-03-09 | Molten metal transfer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07243773A JPH07243773A (en) | 1995-09-19 |
| JP2842987B2 true JP2842987B2 (en) | 1999-01-06 |
Family
ID=12532421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3869494A Expired - Fee Related JP2842987B2 (en) | 1994-03-09 | 1994-03-09 | Molten metal transfer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2842987B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394786A (en) * | 2013-07-25 | 2013-11-20 | 深圳市劲拓自动化设备股份有限公司 | Liquid metal transferring device and transferring method |
| CN108050847B (en) * | 2017-12-08 | 2019-08-16 | 广东金业贵金属有限公司 | Metallurgy siphon tapping method |
-
1994
- 1994-03-09 JP JP3869494A patent/JP2842987B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07243773A (en) | 1995-09-19 |
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